Circumstances of DisappearanceCosio was last seen in Chula Vista, California on
November 20, 1987.
Cosio left his job at a Chula Vista, California construction site and never came back. Three days later, authorities found the company truck he drove away in, parked off the shoulder of Otay Lakes Road.
There were no keys inside and no sign of a struggle.

InvestigatorsIf you have any information concerning this case, please contact:

Chula Vista Police Department
619-691-5151

Agency Case Number: C87-14833

NCIC Number: M-986718850Please refer to this number when contacting any agency with information regarding this case.